
public class Dffgrew {

	public static void main(String[] args) {
        
	}

}

class Tree{
	public Tree getL() {
		return L;
	}
	public void setL(Tree l) {
		L = l;
	}
	public Tree getR() {
		return R;
	}
	public void setR(Tree r) {
		R = r;
	}
	public String getValue() {
		return value;
	}
	public void setValue(String value) {
		this.value = value;
	}
	Tree L=null;
	Tree R=null;
	String value;
}